package com.hong.shiro.config;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.LinkedHashMap;
import java.util.Map;

/**
 * shiro的配置类
 *
 * @author xiehongwei
 * @date 2022/02/11
 */
@Configuration
public class ShiroConfig {
    /**
     * 创建ShiroFilterFactoryBean    
     */
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager) {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(securityManager);

        /*
         * 添加shiro内置过滤器，实现权限相关的url拦截
         * 常见过滤器：
         * anon：无需认证（登录）可以访问
         * authc：必须认证才可以访问
         * user:如果使用Remember Me的功能，可以直接访问
         * perms:该资源必须得到资源权限才可以访问
         * role:该资源必须得到角色权限才可以访问
         */
        Map<String, String> filterMap = new LinkedHashMap<>();
        //授权过滤器：授权拦截后，shiro会自动跳转到未授权页面
        filterMap.put("/add", "perms[user:add]");
        filterMap.put("/update", "perms[user:update]");
//        filterMap.put("/add", "authc");
//        filterMap.put("/update", "authc");
        filterMap.put("/index", "authc");
        filterMap.put("/login", "anon");
        //修改跳转的登录页面，不加此项就会跳转到login.jsp页面
        shiroFilterFactoryBean.setLoginUrl("/toLogin");
        //修改自动跳转的未授权页面
        shiroFilterFactoryBean.setUnauthorizedUrl("/unAuth");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
        return shiroFilterFactoryBean;
    }

    /**
     * 创建DefaultWebSecurityManager
     */
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getdefaultDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联Realm
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    /**
     * 创建Realm  
     */
    @Bean(name = "userRealm")
    public UserRealm getRealm() {
        return new UserRealm();
    }

    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
}
